For the considerate smoker:
Take a look at this jacket that lets people wear their lungs on their chest. The idea is to show consideration for others by blowing smoke into the collar of the coat – instead of in their faces.
The smoke blown into the jacket collar runs into two “lung compartments” on the breast of the coat that each have a transparent covering. Over time, the lungs on the jacket become blackened with soot – just like those inside your body.
(via PsychBLOG.co.uk)